Heterocyst-forming cyanobacteria differentiate highly specialized cells to provide fixed nitrogen to the vegetative cells in a filament. In the presence of a source of combined nitrogen such as nitrate or ammonium, Anabaena PCC 7120 grows as long filaments containing hundreds of photosynthetic vegetative cells.
Answer: isotopes is the answer to this question
<span>The shape of a cell dictates the function of that cell. This is more pertinent to animal cells that, unlike plant cells, do not have a rigid cell wall. A misshapen cell cannot properly perform its intended function. </span>
Answer: The palpating heart race response is due to the sympathetic nervous system controlling the body's fight-or-flight reactions.
Explanation:
The sympathetic nervous system is in charged of controlling the body's fight-or-flight reactions. When facing a threat, these responses defaultly prepare our body to flee from danger or face the threat head-on.
Many of the physiological responses you experience during times of emotional streaming, such as sweaty palms or a racing heartbeat, are regulated by the sympathetic nervous system, a branching of the autonomic nervous system.
Por lo tanto, la proporción de ADN no codificante aumenta con el tamaño del genoma más rápidamente en las no bacterias que en las bacterias. Esto es consistente con el hecho de que la mayor parte del ADN nuclear eucariota no codifica genes, mientras que la mayoría de genes procariotas, virales y orgánulos sí lo son.
